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Gem Resources
PO Box 62006
Minneapolis, MN 55426

Phone: (612) 664-0252
Toll-Free: (800) 588-8515
E-Mail: gri@gemresources.com
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News & Specials

January - February Specials Up to 50% off price
Carnelian, Lab Corundum Cabochons, Zirconia, Black Onyx & more!

Gem stone metal clay heating tests.
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Iolite

Natural Iolite Cabochons

Refraction Index: 1.522 - 1.578
Hardness:  7 - 7.5  
Species: Cordierite
Specific Gravity:   2.53 - 2.78
Treatment: None
Care: Wash with soapy water. Avoid harsh detergents. Never clean ultrasonically or steam clean.

Iolite cabochons are a beautiful transparent blue violet gemstone.  Iolites name comes from the Greek word for violet. It has also been called "water-sapphire".  Iolite is sometimes used as an inexpensive substitute for sapphire.  

Metal Clay, safe to fire at some temperatures.
Test results; Silver 1200F-1HR-OK, Silver 1475F-1HR a little darker, Silver 1650F-2HR Metallic, Bronze 1525F-2HR OK, Copper 1778F-30min color change to lavender.



Round Cab

3 mm 4 pieces $8.00 8 pieces $14.00
4 mm 2 pieces $8.00 4 pieces $14.00
5 mm Out of stock Out of stock
6 mm $17.00 each 2 pieces $30.00



Square Cab

5 x 5 mm $12.00 each 2 pieces $21.00
6 x 6 mm $28.00 each 2 pieces $50.00
8 x 8 mm $65.00 each 2 pieces $115.00



Oval Cab

7 x 5 mm $14.00 each 2 pieces $24.00
8 x 6 mm $35.00 each 2 pieces $60.00

 
 
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